jQuery Grid Plugin - jqGrid

Can someone please tell what stupid mistake I am doing when I try to add a row before the 4th row.  It is constantly adding it to the end of the grid.

Yet the editRow call goes to the 4th row as it should after the row is added.

var emptyItem=[{"rowid":"tableIdField", "act": "", "action":"1", "nfirsCode":"2", "description":"3", "agencyId":"4", "tableName":"5", "tableIdName":"6", "tableIdField":"7" ,"timestamp":"8"}];

var thisRowId = $.jgrid.randId();

$("#" + childGrid + "").addRowData(thisRowId, emptyItem, "before", "4");
$("#" + childGrid + "").jqGrid('editRow',4,true);

And I have looked at the documentation until I was glossy eyed and still can't figure it out.

Oh and by the way the reason behind this portion of the code.... $("#" + childGrid + ""). is that I dynamically create the grids based on an action from another grid on the same page.

Thanks in advance,

Steve